Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 135 for “"Process Performance"”.
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Potential of thermophilic bioleaching, effect of temperature on the process performance
Bioleaching is a biohydrometallurgical process whereby mineral sulphides are metabolically oxidised by microorganisms, releasing precious metals encapsulated in them. This pre-treatment is based on the action of microorganisms affecting oxidation of reduced sulphur species and ferrous iron to …
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Effect of phosphorus limiting conditions on process performance in activated sludge
The effect of phosphorus limiting conditions on process performance was investigated using laboratory scale activated sludge units. Data were collected for COD:P ratios of 287:1, 212:1, 87:1 and 56:1 at several mean cell residence times. Data collected at COD:P ratios of 287:1 and 212:1 produced …
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Towards efficient applications of membrane distillation: impact of configuration on process performance
L'abstract è presente nell'allegato / the abstract is in the attachment
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Improvement of Work Process Performance with Task Assignments and Mental Workload Balancing
<p>The outcome of a work process depends heavily on which tasks assigned to which employees. However, sometimes-optimized assignments based on employees’ qualifications may result in an uneven and ineffective workload distribution among them. Likewise, an even workload distribution without …
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The Influence of Water Quality on Arsenic Sorption and Treatment Process Performance
… and other coagulation based treatment processes in terms of arsenic removal. Secondary impacts of the microsand process such as residual turbidity, iron, post-treatment membrane filter run length, and TOC removal were also considered as part of this evaluation. Microsand ballasted …
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Optimisation of the preservation of microbial cell banks for enhanced fermentation process performance
… 80 and dimethyl sulphoxide on final fermentation performance measured by biomass and α-amylase concentration was investigated using optical density, dry cell weight, colony forming units, and multi-parameter flow cytometry. The application of multi-parameter flow cytometry using the fluorophores …
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Big data analysis interrogating raw material variability and the impact on process performance
… and assess new materials, driven by novel process technologies and new modalities. Finding a solution to technically assess the impact of raw material attributes on the manufacturing process represents a significant opportunity to ensure supply. This study seeks to develop a novel …
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An Investigation into the Effects of Chemical Protective Clothing on Team Process Performance
… Oriented Protective Posture (MOPP) on team performance outcomes in an attempt to understand how protective clothing might affect military teams and squads. Previous research has indicated a degradation of team performance as shown by increased task completion time; however, a comprehensive …
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Establish methodology for estimating process performance capability during the design phase for biopharmaceutical processes
… in order to measure, improve and ensure robust process performance during process development (PD) for biopharmaceutical processes. Designing a standardized approach to leverage process performance capability or Ppk during the process design phase will enable processes to consistently meet …
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3D-printed adsorbents for gas separations: A material development, kinetic assessment, and process performance investigation
… are promising for various gas purification processes, however, forming them into structured contactors is paramount in enhancing mass transfer properties and reducing pressure losses. In this research, various adsorbents were engineered into structured contactors with 3D printing. The …
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Characterisation of lead-free solder pastes and their correlation with the stencil printing process performance
… solder paste properties and their printing process performance. The recent EU directives on RoHS (Restriction of Hazardous Substances – enacted by UK regulations) and WEEE (Waste from Electrical and Electronic Equipment) has led to the use of lead-free soldering in the SMA (surface mount …
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CO2-Assisted Ethylene Production and Subsequent Purification: A Materials Development, Kinetic Assessment, and Process Performance Investigation
… purification through adsorptive separation process. In particular, several dual-function materials (DFMs) were developed, formulated into 3D-structure, and investigated for ODHE reaction to ethylene under various process conditions using CO<sub>2</sub> as a mild oxidant. The DFMs materials …
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Operational, aesthetic, and construction process performance for innovative passive and active solar building components for residential buildings
… operational, aesthetic, and construction process performance. The framework can be used to evaluate innovations within residential construction. By reducing the constraints for use, the framework is adaptable and flexible to specific projects and to the alternatives developed by the user. …
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Does the medium matter: An investigation of process, performance, and affect in computer-mediated and face-to-face groups
… and task characteristics on group interaction, performance, and satisfaction. McGrath's (1984) framework of group tasks and Daft and Lengel's (1984; 1986) theory of information richness were used as a basis to formulate and test the following premise: As tasks more equivocal, or involve …
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Selective hydrogenation for industrial 1-hexene purification
… industrial 1-hexene streams. Even so, reported performance has been poor and, consequently, the principal aim of this study is to adjust operating conditions so as to improve process performance to an industrially interesting level. In particular, the influence of hydrogen excess and competitive …
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Selective hydrogenation for industrial 1-hexene purification
… industrial 1-hexene streams. Even so, reported performance has been poor and, consequently, the principal aim of this study is to adjust operating conditions so as to improve process performance to an industrially interesting level. In particular, the influence of hydrogen excess and competitive …
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An evaluation of separation methods for the selective coagulation of ultrafine coal
… matter has been developed at Virginia Tech. The process, which is known as Selective Hydrophobic Coagulation (SHC), differs from oil agglomeration, shear or polymer flocculation, and electrolytic coagulation processes in that it does not require reagents or additives to induce the formation of …
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Investigation of the microbial populations in the activated sludge of the Hoechst-Celanese wastewater treatment plant
… type could be used by plant operators to monitor process performance. Results indicated that filamentous bacteria may be useful to plant operators for monitoring process performance because an inverse relationship between filamentous bacteria, food-to-microorganism ratio and sludge volume index …
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Artificial intelligence infrastructure into material attributes insights
… development of a biopharmaceutical manufacturing process involves an assessment of all possible sources of variation throughout each of the unit operations in the drive toward six sigma manufacturing. The primary goal of this project is to develop a novel way to assess the variation in raw …
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Novel multiphase chemical reaction systems enabled by microfabrication technology
… in micro-analytics has been research in chemical process miniaturization -- reducing the characteristic length scale of the unit operation to improve heat and mass transfer, and ultimately process performance. My research has involved the design and fabrication of novel chemical reaction systems …
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